IMHO this is just the tip of the iceberg. I can’t even begin to fathom the inordinate amount of conversion mistakes there might be but we never hear about or even detect because this is not NASA yet have possibly damaging consequences.
Nobody uses anything but meters and seconds with metric in science. But even if - using 2 different metric units would give answers differing by a factor of 1000 - a little easier to notice than Pound vs Newton (1 to ~4.45).
A lander is engineering and science, and I can guarantee you that there is a non-zero probability of one part of a system working in m/s and another in km/h — which would lead to the exact same error.
Sure, now. It took the loss of the Mars Climate Orbiter to end the Imperial madness at NASA.
Is that m/s, km/h or kmps?